Detached mouse look while driving a PRT

While I mentioned this as part of my initial PRT feedback / issue report a while back, that topic is now closed as "fixed" since most things in it were addressed over time.

However, I still feel that a limited (+/- 45 deg vertical, +/- 90 deg horizontal from the current fixed "straight ahead" viewing direction) mouse look feature is sorely missing from when driving the PRT and should be a priority, not even primarily for ease of navigation, but to be able to use the suit scanner more efficiently without having to stop, get out, do a sweep, get back in then continue every few hundred meters, which becomes really tedious after a while (and also takes a lot away from the increased mobility the PRT aims to give).